#include <iostream>
#include <array>
#include <type_traits>

template<typename... Args>
auto build_array(Args&&... args) -> std::array<typename std::common_type<Args...>::type, sizeof...(args)> {
  using commonType = typename std::common_type<Args...>::type; // Create array 
  return {std::forward<commonType>(args)...};
}

int main() {
  auto data {build_array(1, 0u, 'a', 3.2f, false)};
  for (const auto& i : data) std::cout << i << " ";
  std::cout << std::endl;

  return 0;
}